Home / 125,345.45-172,992.03-71,618.15

Finding the Fourth Proportional to 125,345.45, 172,992.03 and 71,618.15

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Solution

The fourth proportional to 125,345.45, 172,992.03 and 71,618.15 is: 98,841.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,345.45 : 172,992.03 = 71,618.15 : x
  2. Step 2: Convert to fraction form
    125,345.45/172,992.03 = 71,618.15/x
  3. Step 3: Cross multiply
    125,345.45x = 172,992.03 × 71,618.15
  4. Step 4: Simplify right side
    125,345.45x = 12,389,369,153.34
  5. Step 5: Solve for x
    x = 12,389,369,153.34/125,345.45
  6. Step 6: Final answer
    x = 98,841.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.